CHATTANOOGA — With children and other onlookers holding umbrellas, Sylvester Kitchens stood in the flooded street, laughing and bragging he could swim an overflowing Chattanooga storm ditch outside their house. Wearing shorts and shirtless, the 46-year-old Kitchens dared onlookers to bet him $5 he couldn't do it. Even when nobody showed any money, Kitchens jumped in. After bobbing along in the gushing water about 150 feet late Sunday afternoon and grabbing a chain link fence above the ditch, Kitchens lost his grip as family members tried to toss him the end of a water hose. He washed away into an...